How does 'closed loop' operation change the performance of an OP AMP?

'Closed loop' operation in an operational amplifier (op-amp) significantly enhances its performance by stabilizing gain and improving bandwidth. In this configuration, feedback is applied from the output to the inverting input, which reduces the overall gain but increases linearity and reduces distortion. It also allows for better control of the output, making the op-amp less sensitive to variations in input signal and power supply, thus improving accuracy and consistency in signal processing.